75 elcamino body parts

bought a 75 el camino off ebay for 511$ car came with both complete rear quarters thank god because it needed them looking for other parts cant seem to find them anywhere new or used any help would be great. need rear inner fender wells both sides ,passenger door or door skin ,rear bumper

Welcome to AF!
I've always made the recommendation to people looking for hard-to-find parts to try looking at Hemmings Motor News. It is a monthly publication with tons of parts for practically every make and model. www.hemmings.com